Generator Protection Systems

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Built on the industry-leading UR platform, the G60 offers superior protection for medium and large generators, including large steam and combustion turbines, combined cycle generators and multi-circuit hydro units. The G60 may also be used on pumped storage generators without the need to switch the CT secondary circuitry. The G60 provides advanced communication with an integrated, fully managed Ethernet switch reducing network installation costs while supporting industry standard communication protocols.

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Key Benefits

• Secure, high-speed protection elements for complete generator protection, compliant with IEEE C37.102

• Advanced IEC 61850 Ed. 1 and Ed. 2 certified implementation, complete settings via SCL files and IEC 61850-9-2 process bus solution ensures interoperability, device managing optimization and reduced cost of ownership

• Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation, which enables wide area protection and control applications

• Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control

• Phasor Measurement Unit (synchrophasor) according to IEEE® C37.118 (2011) and IEC® 61850-90-5 support

• Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization

• An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors

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Applications

• Medium to large generators typically driven by steam, gas or hydraulic turbines

• Pumped storage generators used as pumping motors for reservoir storage

• Stand-alone protection or component in automated substation control systems

• Standard protection product offering on new General Electric generator installations

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Key Features

Protection and Control

• Generator stator differential

• 100% stator ground protection 3rd harmonic

• Field ground protection

• 100% stator ground fault protection using sub-harmonic injection

• Loss of excitation

• Power swing blocking and out-of-step tripping

• Backup distance

• Reverse/low forward power

• Restricted ground fault, thermal overload protection, directional, time, instantaneous, phase, neutral, negative sequence and ground overcurrent protection

• Restricted ground fault

• Overexcitation

• Generator unbalance

• Breaker failure protection

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Monitoring & Metering

• Metering - current, voltage, power, energy, frequency

• Oscillography – analog and digital parameters at 64 samples/cycle

• Event Recorder - 1024 time tagged events with 0.5ms scan of digital inputs

• Data Logger - 16 channels with sampling rate up to 1 sample / cycle

• Advanced relay health diagnostics

• P & M class synchrophasors of voltage, current and sequence components – 1 to 120 frames/sec

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Communication

• Complete IEC 61850 Process Bus solution providing resource optimization and minimizing total P & C life cycle costs

• Three independent 100Mbps Ethernet ports enable purpose specific LAN support that eliminates latency effect of heavy traffic protocols on mission critical communication services

• Embedded IEEE 1588 time synch protocol support eliminates dedicated IRIG-B wiring requirements for IEDs

• Direct I/O secures high-speed exchange of binary data between URs

• Increase network availability by reducing failover time to zero through IEC62439-3 “PRP” support

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UR Switch Module

In addition to providing high-speed connectivity directly to your Universal Relay, the UR Switch Module provides an additional 4 fiber Ethernet ports, for connection to other relays in the system as well as upstream connectivity. It also provides 2 RJ45 copper Ethernet ports which can be used to connect local devices such as PCs, meters, or virtually anything else in the system.

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The UR Switch Module provides a simple way to add fully-managed Ethernet networking to your relays and devices without the need for additional hardware or a dedicated communications cabinet.

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The UR Switch Module includes all of the management and features that come with all MultiLink managed switches, and can be easily integrated into a network that has other Ethernet switches.

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When used in a ring topology with other UR Switch Modules or MultiLink Switches, the UR Switch Module can be configured to use MultiLink’s Smart RSTP feature to provide industry-leading network recovery for ring topologies, at a speed of less than 5ms per switch. 

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Interoperability with Enbedded IEC 61850

Use the G60 with integrated IEC 61850 to lower costs associated with generator protection, control and automation. GE’s leadership in IEC 61850 comes from thousands of installed devices and follows on years of development experience with UCA 2.0.

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The G60’s IEC 61850 Process Bus module is designed to interface with the Multilin HardFiber System, allowing bi-directional IEC 61850 fiber optic communications. The HardFiber System is designed to integrate seamlessly with existing Universal Relay applications, including protection functions, FlexLogic, metering and communications.

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Sofeware & Security

Cyber Security - CyberSentry UR (FW v7.4xx)

CyberSentry enables UR devices to deliver full cyber security features that help customers to comply with NERC CIP and NITIR 7628 cyber security requirements through supporting the following core features:

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Password Complexity

Supporting up to 20 alpha- numeric or special characters, UR passwords exceed NERC CIP requirements for password complexity. Individual passwords per role are available.

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AAA Server Support (Radius)

Enables integration with centrally managed authentication and accounting of all user activities and uses modern industry best practices and standards that meet and exceed NERC CIP requirements for authentication and password management.

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Role Based Access Control (RBAC)

Efficiently administrate users and roles within UR devices. The new and advanced access functions allow users to configure up to five roles for up to eight configurable users with independent passwords. The standard “Remote Authentication Dial In User Service” (Radius) is used for authentication.

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Event Recorder (Syslog for SEM)

Capture all cyber security related events within a SOE element (login, logout, invalid password attempts, remote/local access, user in session, settings change, FW update, etc), and then serve and classify data by security level using standard Syslog data format. This enables UR devices integration with established SEM (Security Event Management) systems.

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EnerVista Software

The EnerVista™ suite is an industry-leading set of software programs that simplifies every aspect of using the G60 relay. The EnerVista™ suite provides all the tools to monitor the status of the protected asset, maintain the relay, and integrate information measured by the G60 into DCS or SCADA monitoring systems. Convenient COMTRADE and Sequence of Events viewers are an integral part of the UR setup software included with every UR relay, to carry out postmortem event analysis and ensure proper protection system operation.